Python脚本抛出WindowsError在Windows命令行，工作在Git中的Bash

我目前正在为Adblock Plus的源代码为学校项目，我使用的是自动安装插件可以方便地部署到我的浏览器然而， Python中提供的构建工具似乎只在我出于某种原因在Git Bash中执行它们时才起作用。Python脚本抛出WindowsError在Windows命令行，工作在Git中的Bash

以下是错误消息时，我尝试在 Windows命令行执行命令：

C:\Users\Evert\Documents\GitHub\adblockplus>python build.py autoinstall 8888 
Traceback (most recent call last): 
    File "C:\Users\Evert\Documents\GitHub\adblockplus\ensure_dependencies.py", line 380, in <module> 
    resolve_deps(repo) 
    File "C:\Users\Evert\Documents\GitHub\adblockplus\ensure_dependencies.py", line 324, in resolve_deps 
    update_repo(target, vcs, rev) 
    File "C:\Users\Evert\Documents\GitHub\adblockplus\ensure_dependencies.py", line 272, in update_repo 
    resolved_revision = repo_types[type].get_revision_id(target, revision) 
    File "C:\Users\Evert\Documents\GitHub\adblockplus\ensure_dependencies.py", line 106, in get_revision_id 
    return subprocess.check_output(command, cwd=repo).strip() 
    File "C:\Python27\lib\subprocess.py", line 212, in check_output 
    process = Popen(stdout=PIPE, *popenargs, **kwargs) 
    File "C:\Python27\lib\subprocess.py", line 390, in __init__ 
    errread, errwrite) 
    File "C:\Python27\lib\subprocess.py", line 640, in _execute_child 
    startupinfo) 
WindowsError: [Error 2] The system cannot find the file specified 
Command '['C:\\Python27\\python.exe', 'C:\\Users\\Evert\\Documents\\GitHub\\adblockplus\\ensure_dependencies.py', 'C:\\Users\\Evert\\Documents\\GitHub\\adblockplus']' returned non-zero exit status 1 
Failed to ensure dependencies being up-to-date! 
Traceback (most recent call last): 
    File "build.py", line 18, in <module> 
    buildtools.build.processArgs(BASE_DIR, sys.argv) 
    File "C:\Users\Evert\Documents\GitHub\adblockplus\buildtools\build.py", line 601, in processArgs 
    commands[command](baseDir, scriptName, opts, args, type) 
    File "C:\Users\Evert\Documents\GitHub\adblockplus\buildtools\build.py", line 55, in __call__ 
    return self._handler(baseDir, scriptName, opts, args, type) 
    File "C:\Users\Evert\Documents\GitHub\adblockplus\buildtools\build.py", line 225, in runAutoInstall 
    packager.autoInstall(baseDir, type, host, port, multicompartment=multicompartment) 
    File "C:\Users\Evert\Documents\GitHub\adblockplus\buildtools\packagerGecko.py", line 334, in autoInstall 
    createBuild(baseDir, type=type, outFile=fileBuffer, multicompartment=multicompartment) 
    File "C:\Users\Evert\Documents\GitHub\adblockplus\buildtools\packagerGecko.py", line 294, in createBuild 
    version = getBuildVersion(baseDir, metadata, releaseBuild, buildNum) 
    File "C:\Users\Evert\Documents\GitHub\adblockplus\buildtools\packager.py", line 58, in getBuildVersion 
    buildNum = getBuildNum(baseDir) 
    File "C:\Users\Evert\Documents\GitHub\adblockplus\buildtools\packager.py", line 46, in getBuildNum 
    result = subprocess.check_output(['git', 'rev-list', 'HEAD'], cwd=baseDir) 
    File "C:\Python27\lib\subprocess.py", line 212, in check_output 
    process = Popen(stdout=PIPE, *popenargs, **kwargs) 
    File "C:\Python27\lib\subprocess.py", line 390, in __init__ 
    errread, errwrite) 
    File "C:\Python27\lib\subprocess.py", line 640, in _execute_child 
    startupinfo) 
WindowsError: [Error 2] The system cannot find the file specified

这是不是一个巨大的问题，对我来说，因为它不建立，但我不能帮但想知道：这两个环境之间的区别是什么使得这个脚本的工作？

来源

2017-01-09 Evert Verschoor

我的第一个猜测是它试图执行某些操作（子进程模块是提示），并且在该路径的窗口下不可用。示例/c/windows/notepad.exe vs c：\ windows \ notepad.exe。 – RedX

问题可能出现在“subprocess.check_output（['git'，'rev-list'，'HEAD']，cwd = baseDir）” - 检查git是否在系统路径等。我会帮助你更多，但窗户对我来说是黑魔法。 – MacHala

顺便说一句，欢迎来到该网站！查看[tour]（https://stackoverflow.com/tour）了解更多关于期望的内容。 – cxw

该问题似乎是git.exe不在您的Windows PATH，它绝对是在Git Bash :)。你有两个 “未找到” 的错误，既为git：

在ensure_dependencies.py，线106，执行command。每the source，命令是['git', 'rev-parse', '--revs-only', rev + '^{commit}']。
在packager.py，第46行，执行['git', 'rev-list', 'HEAD']。

这两个都是失踪git。要修复，运行python build.py之前，做

path %PATH%;c:\<wherever git.exe is located>

或添加的git.exe的位置，使用控制面板系统PATH。

编辑如果你的Git安装从GitHub，this answer提供了有关加入的Git你PATH细节。

来源

2017-01-09 12:31:17 cxw

谢谢，将git.exe添加到我的路径是解决方案。 –

Python脚本抛出WindowsError在Windows命令行，工作在Git中的Bash

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